GM is getting hit with another legal claim over their eight-speed automatic transmissions, which allegedly contain defects requiring replacement of its internal components or full replacement.
As first reported by GM Authority, The eight-speed transmission problems allegedly can be traced back to an issue with the torque converter that causes excess friction. Additionally the lawsuit also cites more than 60 technical service bulletins and service updates put out by GM regarding the eight-speed transmission problems.
GM Eight-Speed Transmission Lawsuit
As a result of friction from the torque converter, metal shavings allegedly are distributed through the transmission. Over some time, according to the lawsuit, the metal shavings cause problems within the transmission. Many of the transmission components end up damaged and either require repair or new transmission.
The lawsuit alleges that TSB documents are evidence GM was aware of problems with the transmission yet decided to sell those vehicles fitted with the eight-speed transmission anyway.
The class action suit filed against General Motors has requested that they change their warranties to address these transmission problems and also issue a recall for affected vehicles.
This class-action suit was filed against General Motors in the U.S District Court for Eastern Michigan, Southern Division.
Symptoms of Defective GM Eight-Speed Transmission
The following transmission symptoms have been alleged in the class action lawsuit:
- Slipping, buck, kick, jerking
- Harshly engage
- Delay in downshifts
- Sudden acceleration
- Delayed acceleration
- Difficulty stopping the vehicle
- Suffer abnormal internal wear
General Motors Models Affected
The full list of affected GM vehicles in this class-action includes the following:
- 2015-2019 Cadillac Escalade
- 2015-2019 Cadillac Escalade ESV
- 2016-2019 Cadillac ATS
- 2016-2019 Cadillac ATS-V
- 2016-2019 Cadillac CTS
- 2016-2019 Cadillac CTS-V
- 2016-2019 Cadillac CT6
- 2015-2019 Chevrolet Silverado
- 2017-2019 Chevrolet Colorado
- 2015-2019 Chevrolet Corvette
- 2016-2019 Chevrolet Camaro
- 2017-2019 GMC Canyon
- 2015-2019 GMC Sierra
- 2015-2019 GMC Yukon
- 2015-2019 GMC Yukon XL
Owners experiencing problems with their GM eight-speed transmissions should document all dealings with service departments and keep all receipts. We will continue to provide updates as more news develops.
March 17, 2022 Update
This lawsuit has now been consolidated. Please see: GM 8 Speed Transmission Problems Leads to Another Class Action Lawsuit
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Last Updated on June 9, 2022
Loves anything with a motor and wheels.
Christopher is an internet technology expert and mechanical engineer. When he’s not at the local autocross event, he can often be found working on one of his cars. He loves nothing more than taking something apart and putting it back together again–better than before.